--- a/etc/X11/gdm/custom.conf	2009-07-31 00:32:22.065895378 -0500
+++ b/etc/X11/gdm/custom.conf	2009-07-31 00:32:38.975622851 -0500
@@ -54,6 +54,8 @@
 
 [daemon]
 
+DefaultSession=xfce.desktop
+
 [security]
 
 [xdmcp]
